Alternatives to Texas Instruments LM45CIM3/NOPB
Texas Instruments LM45CIM3/NOPB and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 LM45CIM3/NOPBTexas Instruments |  TMP235A2DBZRTexas Instruments |  MCP9700AT-E/TTMicrochip Technology | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Identical SOT-23-3 (DBZ) package and exact pinout configuration (Pin 1: VDD/Vs, Pin 2: VOUT/Vo, Pin 3: GND).Interchangeable SOT-23 surface mount form factor with matching mechanical dimensions.Operating supply voltage range is narrower (2.3V to 5.5V max) compared to the LM45's 4.0V to 10.0V. If the design utilizes a supply rail above 5.5V, a voltage regulator or divider is required. | Matches the SOT-23-3 layout and shares the exact pin sequence (Pin 1: VDD, Pin 2: VOUT, Pin 3: GND).Standard SOT-23 package with matching package outlines.The maximum supply voltage limit is 5.5V, which is lower than the 10V rating of the LM45. | ||
 AI Summary | LM45CIM3/NOPB by Texas Instruments: Temperature Sensor Analog, Local -20°C ~ 100°C 10mV/°C SOT-23-3. | The TMP235A2DBZR is the modern, active replacement from Texas Instruments. It offers the exact same 10 mV/°C transfer function and physical SOT-23-3 footprint, but operates with significantly lower power consumption and improved measurement accuracy. Let it be noted that the supply voltage ceiling is reduced from 10V to 5.5V.
| The MCP9700AT-E/TT is an active, highly popular analog temperature sensor from Microchip. It serves as an excellent second-source alternative, matching the 10 mV/°C temperature coefficient and physical SOT-23 footprint. It is ideal for 2.5V, 3.3V, or 5V logic supply systems but cannot exceed 5.5V supply voltage.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Temperature Sensor Analog, Local -20°C ~ 100°C 10mV/°C SOT-23-3 | Temperature Sensor Analog, Local -40°C ~ 150°C 10mV/°C SOT-23-3 | Temperature Sensor Analog, Local -40°C ~ 125°C 10mV/°C SOT-23-3 | |
| Manufacturer | Texas Instruments | Texas Instruments | Microchip Technology | |
| Type | Temperature Sensors | Temperature Sensors | Temperature Sensors | |
| Datasheet | Open | Open | Open | |
| Lead Time | 12 weeks | 9 weeks | 5 weeks | |
| Country of Origin | MY | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0090 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Resolution | 10mV/°C | - | - | |
| Output Type | Analog Voltage | - | - | |
| Sensor Type | Analog, Local | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 LM45CIM3Texas Instruments | In stock | Obsolete | 3Alternatives availableSee Alternatives |
 LM393M/NOPBTexas Instruments | In stock | Active | 4Alternatives availableSee Alternatives |
 LM8261M5/NOPBTexas Instruments | In stock | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments LM45CIM3/NOPB is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Texas Instruments LM45CIM3/NOPB are the TMP235A2DBZR (Texas Instruments) and the MCP9700AT-E/TT (Microchip Technology), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the LM45CIM3/NOPB are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The LM45CIM3/NOPB (Texas Instruments) is a part in the Temperature Sensors category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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